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mystygage opened this issue May 23, 2017 · 2 comments
Closed

massive StackOverflowErrors in Logs #1240

mystygage opened this issue May 23, 2017 · 2 comments

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@mystygage
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I recently switched to 1.8 and was wondering about a big log file.

Every full minute I see a INFO about loading repos for anonymous followed by a StackOverFlow with 1000 lines stacktrace. There is no external monitoring configured for this service, so I assume this is something like an internal self test?

2017-05-23 03:15:00 [INFO ] 170 repository models loaded for anonymous in 516 msecs
2017-05-23 03:15:02 [ERROR] Exception when detaching/serializing page
java.lang.StackOverflowError
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1108)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
	at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1378)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
	at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1378)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
	at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1378)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
	at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1378)
[...]

After restarting the service the SOE is gone for some time and I see only log lines like these:

2017-05-23 03:17:00 [INFO ] 170 repository models loaded for anonymous in 531 msecs
2017-05-23 03:18:00 [INFO ] 170 repository models loaded for anonymous in 563 msecs
2017-05-23 03:19:00 [INFO ] 170 repository models loaded for anonymous in 641 msecs
2017-05-23 03:20:00 [INFO ] 170 repository models loaded for anonymous in 531 msecs

But then it starts again:

2017-05-23 08:19:53 [INFO ] 170 repository models loaded for anonymous in 515 msecs
2017-05-23 08:20:00 [INFO ] 170 repository models loaded for anonymous in 469 msecs
2017-05-23 08:20:00 [INFO ] incrementally added 1.215 commits to cache for prj/customer1.git:refs/heads/featureBranch1 in 122 msecs
2017-05-23 08:20:01 [INFO ] incrementally added 4 commits to cache for prj/customer2.git:refs/heads/master in 42 msecs
2017-05-23 08:20:01 [ERROR] Exception when detaching/serializing page
java.lang.StackOverflowError
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1108)
	at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1378)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
	at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1378)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)

2017-05-23 09:43:00 [INFO ] 170 repository models loaded for anonymous in 485 msecs
2017-05-23 09:43:01 [ERROR] Exception when detaching/serializing page
java.lang.StackOverflowError
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1108)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
	at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1378)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
	at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1378)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
	at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1378)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1509)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1432)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1178)
	at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1378)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1174)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1548)
@gitblit
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gitblit commented May 23, 2017

There is a reference in a Wicket page which gets serialized and creates this stack overflow. #1141 may resolve it, but I haven't confirmed.

@mystygage
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Thanks for your response. Must have missed this other issue this morning, sorry.

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@gitblit @mystygage